TY - JOUR
T1 - Immediate functional loading of single-tooth TiO2 grit-blasted implant restoration. A controlled prospective study in a porcine model. Part II
T2 - Histology and histomorphometry
AU - Bousdras, Vasilios A.
AU - Walboomers, Frank
AU - Jansen, John A.
AU - Cunningham, James L.
AU - Blunn, Gordon
AU - Petrie, Aviva
AU - Jaecques, Siegfried
AU - Naert, Ignace E.
AU - Sindet-Pedersen, Steen
AU - Goodship, Allen E.
PY - 2007/12
Y1 - 2007/12
N2 - Background: Evidently, there is a fast-moving shift from delayed to immediate implant loading. The hypothesis to be tested was that bone reactions adjacent to single TiO2-microthreaded implants exposed to immediate masticatory loading for 10 weeks after placement would modulate osseointegration.Materials and Methods: Cylindrical- and tapered-designed implants (Astra Tech AB, Mölndal, Sweden) replaced first and third mandibular premolars respectively in 12 pigs. The animals were allocated into two groups based on soft and hard diet feeding. Each animal received, at random positions, four different masticatory loading conditions: implant with either (1) a cover screw only, (2) a healing abutment, (3) an implant with a crown without occlusal contact, or (4) an implant with a crown in contact with the antagonistic teeth.Results: Histomorphometry showed that there were no statistically significant differences in bone-implant contact (BIC), bone mass inside/outside of the threads and soft tissue ingrowth ratio for all the implants at 10 weeks after placement irrespective of masticatory loading condition. Bone loss showed a trend of progressive increase for implants with a healing abutment toward implants with occlusal contact.Conclusions: The results of this study rejected the hypothesis and could be explained by the fact that grit-blasted acid-etched implants were already placed in dense bone.
AB - Background: Evidently, there is a fast-moving shift from delayed to immediate implant loading. The hypothesis to be tested was that bone reactions adjacent to single TiO2-microthreaded implants exposed to immediate masticatory loading for 10 weeks after placement would modulate osseointegration.Materials and Methods: Cylindrical- and tapered-designed implants (Astra Tech AB, Mölndal, Sweden) replaced first and third mandibular premolars respectively in 12 pigs. The animals were allocated into two groups based on soft and hard diet feeding. Each animal received, at random positions, four different masticatory loading conditions: implant with either (1) a cover screw only, (2) a healing abutment, (3) an implant with a crown without occlusal contact, or (4) an implant with a crown in contact with the antagonistic teeth.Results: Histomorphometry showed that there were no statistically significant differences in bone-implant contact (BIC), bone mass inside/outside of the threads and soft tissue ingrowth ratio for all the implants at 10 weeks after placement irrespective of masticatory loading condition. Bone loss showed a trend of progressive increase for implants with a healing abutment toward implants with occlusal contact.Conclusions: The results of this study rejected the hypothesis and could be explained by the fact that grit-blasted acid-etched implants were already placed in dense bone.
KW - Alveolar Bone Loss
KW - Animals
KW - Bone Density
KW - Crowns
KW - Dental Implantation, Endosseous
KW - Dental Implants, Single-Tooth
KW - Dental Prosthesis, Implant-Supported
KW - Dental Restoration Failure
KW - Dental Stress Analysis
KW - Diet
KW - Mandible
KW - Mastication
KW - Models, Animal
KW - Osseointegration
KW - Prospective Studies
KW - Statistics, Nonparametric
KW - Surface Properties
KW - Sus scrofa
KW - Time Factors
KW - Titanium
KW - Tooth Socket
KW - Comparative Study
KW - Research Support, Non-U.S. Gov't
UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=webofscienceportsmouth2022&SrcAuth=WosAPI&KeyUT=WOS:000251186500004&DestLinkType=FullRecord&DestApp=WOS
U2 - 10.1111/j.1708-8208.2007.00039.x
DO - 10.1111/j.1708-8208.2007.00039.x
M3 - Article
C2 - 18031442
SN - 1523-0899
VL - 9
SP - 207
EP - 216
JO - Clinical Implant Dentistry and Related Research
JF - Clinical Implant Dentistry and Related Research
IS - 4
ER -